Typewriter word register



Oct. 25,1927. 1,646,799

F. C. URSBRUCK TYPEWRITER WORD REGISTER Filegl Feb. 7, 1924 FRONT VIEW In renfbr:

Ar/W Passed a. '25, 1927.

.EUNITED OFFICE,

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'rvrnwnrrnn woan maternal Application filed February 7, 1924. Serial No. 691,129.

The invention relatesto registers, in typewriting machines, for indicating the amount of work done bythe operator, as, for instance, by counting thestrokes of the character-keys and space key or bar.

The universal bar which controls the letter-feed escapement mechanism for the carriage, and which is actuated at each keystroke, is conveniently employed as the means whereby to drive the register. Heretofore, however, the connections from the keys to the register throughthe universal bar have been such as to involve so much lost motion that reliable action of the register has not been obtained, except at sacrifice of lightness and uniformity. of keytouch. j

An object of the present invention isthe provision of means whereby, with a light 26 and uniform key-touch, to operate the reg-.

ing the register being thus imposed upon the operator, but the connections being such that the effort of driving the register is unnoticeable. p

A feature of the invention is the provision of driving connections for the register, directly from the universal bar, such that several actuations of the universalbar, or

key-impulses, are required to count a unit a into the register; or, in other words, such that the accumulated efforts of a plurality of light and uniform key-touches result in a sin le unit being counted withcertainty p shoulder 24 wherebyto engage andthrow into t e register.

, A feature of the invention is a mounting of the register, and connections therefrom,

to the universal bar, such that the re 'ster, while reliably operable by a light an 'uni form key-touch, may, nevertheless, be located on that part of the machine where it is most easily accessible andvisible; and such that 'the re ister and its driving connections are plaoea 1e and removable, at will, without involving the employment of special structural features in the machine.

Other features; and advantages will hereinafter appear.

In the accompanying drawings, Figure 1 is a side elevation, partly in sect1on of a typewriting machine showing the invention applied thereto.

Figure 21s a fragmentary detail top" plan universal bar and the register.

Figure 3 1s a fragmentary detail front view showing the connection between the view showing thearrangement of-parts. re 4 1s a side elevation as seen from the left-hand slde, of the register-actuating Figu connection and the bracket which supports the reg1ster.- n

' Inthe Underwood standard typewriting machine, a universal bar 10-is moved rearward, upon the depression of any characterkey 5'or ofthe space bar or key 6, to actuate escapement mechanism 7 ,.to permit of a single letter-space movement of the platen-- carriage Son the main frame 9 of the machine.

holds the universal bar forward in its nor The unver'sal bar is supported byarms f11v on a rock-shaft .12.- Aspring 13 mal position of rest, and returns the universal bar to such normal position upon release of the character and space keys. I

The character-keys 5 are on levers 15, fulcrumedat 16'. Springs 17 throw the charaos ter-key levers 15 upward to normal position when the character-keys are released. Each oharacter-key lever has a pin-and-slot connection 18 with a bell-crank 19, pivoted at 20 to the 'frame. An u wardly-extending arm 21 of each of these bell-cranks is pivotally connected at 22 to a type-bar-23, ful- I crumed in the usual segment-plate; so that,

upon depression of a character-key, the typebar is thrown upward and rearward to cause the type to strike. on the front face of the laten. Each type-bar is provided with a rearward the universal bar for actuation of the escapement mechanism, upon operation of a key. 7 v

The space bar or key 6 is su ported on arms 26, pivoted at. 27 to the rame. An arm 28, which is unitary with the arms 26, extends rearward and upward from the pizpt 27, for engagement with an arm 29 to the rock-shaft 12, to form a bell- -A register 30 is secured crank with the arms 11 which support the universal bar. Consequently, upon depression of the space-bar,'the arms 11 are rocked rearward with the universal bar to actuate the escapement mechanism.

by screws 31 to the outer face of .a plate 32, which, in turn, is secured to and forms part of a bracket 33, mounted on the right-hand side of the machine. The bracket 33 has a vertically-dis posed portion 34 set against theright-hand side piece 35 of the main frame, which portion 34is offset laterally and leftward at its upper end to extend over the upper edge of the side frame 35, and over the upper face of the member 36 of the frame or standard on which the ribbon-spools and the bichrome ribbon shifting mechanism are supported. The bracket 33 is securedto the member. 36 by means of screws 37. At the bottom edge of the vertical portion 34 of' the bracket, there is an oflset 38 rightward to the bottom edge of the plate 32, thereby forming the support for the plate 32. The plate 32, the vertical portion 34 of the bracket, and the crosspiece 38 of the bracket form a U. The numer-wheel shaft 40 of the register passes through the plate 32, and on its end carries a ratchet 39, within the U formed aforesaid by the plate 32 and bracket. Loosely pivoted on the shaft 40 is an arm 41, which carries a pawl 42 for engagement with the teeth of the ratchet 39. w A- coil-spring 43, connected at one end to the pawl 42, and at its other end' to a link 44, holds the pawl to the ratchet. The link 44 is pivotally connected at 45 to the pawl-carrying arm 41, and at 46 to the right-hand end of a lever 47. The lever 47 is pivotally mounted at an intermediate point 48 thereof; In the Underwood standard typewriting machine, there is on the type bar'segment frame a bracket for supporting the bichrome ribbon mechanism on the aforesaid sub-frame and a screw which holds the bracket to said frame may conveniently constitute the pivotal bearing 48 for the lever 47. The arm 50 forming part of thelever to the left of the pivot 48 is extended to the rear of the universal bar 10, and hasa finger 51 turned forward on its left-hand end for engagement with the rear face of the universal bar.

It follows that, when a key is depressed to throw the universal bar'rearward, said bar, by pressing upon the arm 50 of the lever 47, rocks the lever 47 clockwise, to efiect a forward thrust of-the link 44. The link 44, during the forward thrust of the same, rocks the pawl-carrying arm 41 and awl 42 counterclockwise (Figure 2), to e ect a rotary feed of the ratchet 39, and, consequently, of the register-shaft 40 and number-wheel. A spring 49, connected at one end to-the link 44, and at its other, end to the plate 32, pulls rearward on the link 44, to return the link 44 and connected parts to normalposition, wheif the key, which has actuated the universal bar, is released. A detent 52, pressed against the ratchet-wheel 39 by a spring 53, serves to hold the ratchet-wheel against accidental rotary displacement.

In order to render the mechanism inaccessible to the operator, there is a cover-plate 54 mounted on the plate 32 and extending laterally therefrom over the gearing which lies within the U formed by the plate 32 and bracket'33. The cover plate is curved to conform to the curvature of the edge of the plate 32, and has ears 55, through which screws 56 are passed, to hold the cover-plate in position. The cover-plate may project rearward beyond the rear edge of the'plate 32, com* pletely to overlie the link 44, and may have a depending portion 57 substantially flush with the right-hand face of the plate 32, complete- 1y to conceal the link 44. The cover-plate may be extended laterally leftward to the bracket-portion 34 and be. steadied by the latter. The upper face of the cover-plate may be recessed or cut away at 58, to receive the bracket-portion 34.

Variations may be resorted to within the scope of the invention, and portions of the improvements may be used without others.

Having thus describedmy invention, I claim:

1. In a typewriting machine including type-bars and a universal bar operatively mounted upon a type-.bar-s'egment-frame,

FRANK C. URSBRUCK. 

